mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-11-24 12:09:55 +00:00
312 lines
8.8 KiB
C
312 lines
8.8 KiB
C
/*
|
|
* Copyright (C) 2004 the ffmpeg project
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file vp3dsp.c
|
|
* Standard C DSP-oriented functions cribbed from the original VP3
|
|
* source code.
|
|
*/
|
|
|
|
#include "common.h"
|
|
#include "avcodec.h"
|
|
#include "dsputil.h"
|
|
|
|
#define IdctAdjustBeforeShift 8
|
|
#define xC1S7 64277
|
|
#define xC2S6 60547
|
|
#define xC3S5 54491
|
|
#define xC4S4 46341
|
|
#define xC5S3 36410
|
|
#define xC6S2 25080
|
|
#define xC7S1 12785
|
|
|
|
static always_inline void idct(uint8_t *dst, int stride, int16_t *input, int type)
|
|
{
|
|
int16_t *ip = input;
|
|
uint8_t *cm = cropTbl + MAX_NEG_CROP;
|
|
|
|
int A_, B_, C_, D_, _Ad, _Bd, _Cd, _Dd, E_, F_, G_, H_;
|
|
int _Ed, _Gd, _Add, _Bdd, _Fd, _Hd;
|
|
int t1, t2;
|
|
|
|
int i;
|
|
|
|
/* Inverse DCT on the rows now */
|
|
for (i = 0; i < 8; i++) {
|
|
/* Check for non-zero values */
|
|
if ( ip[0] | ip[1] | ip[2] | ip[3] | ip[4] | ip[5] | ip[6] | ip[7] ) {
|
|
t1 = (int32_t)(xC1S7 * ip[1]);
|
|
t2 = (int32_t)(xC7S1 * ip[7]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
A_ = t1 + t2;
|
|
|
|
t1 = (int32_t)(xC7S1 * ip[1]);
|
|
t2 = (int32_t)(xC1S7 * ip[7]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
B_ = t1 - t2;
|
|
|
|
t1 = (int32_t)(xC3S5 * ip[3]);
|
|
t2 = (int32_t)(xC5S3 * ip[5]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
C_ = t1 + t2;
|
|
|
|
t1 = (int32_t)(xC3S5 * ip[5]);
|
|
t2 = (int32_t)(xC5S3 * ip[3]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
D_ = t1 - t2;
|
|
|
|
|
|
t1 = (int32_t)(xC4S4 * (A_ - C_));
|
|
t1 >>= 16;
|
|
_Ad = t1;
|
|
|
|
t1 = (int32_t)(xC4S4 * (B_ - D_));
|
|
t1 >>= 16;
|
|
_Bd = t1;
|
|
|
|
|
|
_Cd = A_ + C_;
|
|
_Dd = B_ + D_;
|
|
|
|
t1 = (int32_t)(xC4S4 * (ip[0] + ip[4]));
|
|
t1 >>= 16;
|
|
E_ = t1;
|
|
|
|
t1 = (int32_t)(xC4S4 * (ip[0] - ip[4]));
|
|
t1 >>= 16;
|
|
F_ = t1;
|
|
|
|
t1 = (int32_t)(xC2S6 * ip[2]);
|
|
t2 = (int32_t)(xC6S2 * ip[6]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
G_ = t1 + t2;
|
|
|
|
t1 = (int32_t)(xC6S2 * ip[2]);
|
|
t2 = (int32_t)(xC2S6 * ip[6]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
H_ = t1 - t2;
|
|
|
|
|
|
_Ed = E_ - G_;
|
|
_Gd = E_ + G_;
|
|
|
|
_Add = F_ + _Ad;
|
|
_Bdd = _Bd - H_;
|
|
|
|
_Fd = F_ - _Ad;
|
|
_Hd = _Bd + H_;
|
|
|
|
/* Final sequence of operations over-write original inputs. */
|
|
ip[0] = _Gd + _Cd ;
|
|
ip[7] = _Gd - _Cd ;
|
|
|
|
ip[1] = _Add + _Hd;
|
|
ip[2] = _Add - _Hd;
|
|
|
|
ip[3] = _Ed + _Dd ;
|
|
ip[4] = _Ed - _Dd ;
|
|
|
|
ip[5] = _Fd + _Bdd;
|
|
ip[6] = _Fd - _Bdd;
|
|
|
|
}
|
|
|
|
ip += 8; /* next row */
|
|
}
|
|
|
|
ip = input;
|
|
|
|
for ( i = 0; i < 8; i++) {
|
|
/* Check for non-zero values (bitwise or faster than ||) */
|
|
if ( ip[1 * 8] | ip[2 * 8] | ip[3 * 8] |
|
|
ip[4 * 8] | ip[5 * 8] | ip[6 * 8] | ip[7 * 8] ) {
|
|
|
|
t1 = (int32_t)(xC1S7 * ip[1*8]);
|
|
t2 = (int32_t)(xC7S1 * ip[7*8]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
A_ = t1 + t2;
|
|
|
|
t1 = (int32_t)(xC7S1 * ip[1*8]);
|
|
t2 = (int32_t)(xC1S7 * ip[7*8]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
B_ = t1 - t2;
|
|
|
|
t1 = (int32_t)(xC3S5 * ip[3*8]);
|
|
t2 = (int32_t)(xC5S3 * ip[5*8]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
C_ = t1 + t2;
|
|
|
|
t1 = (int32_t)(xC3S5 * ip[5*8]);
|
|
t2 = (int32_t)(xC5S3 * ip[3*8]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
D_ = t1 - t2;
|
|
|
|
|
|
t1 = (int32_t)(xC4S4 * (A_ - C_));
|
|
t1 >>= 16;
|
|
_Ad = t1;
|
|
|
|
t1 = (int32_t)(xC4S4 * (B_ - D_));
|
|
t1 >>= 16;
|
|
_Bd = t1;
|
|
|
|
|
|
_Cd = A_ + C_;
|
|
_Dd = B_ + D_;
|
|
|
|
t1 = (int32_t)(xC4S4 * (ip[0*8] + ip[4*8]));
|
|
t1 >>= 16;
|
|
E_ = t1;
|
|
|
|
t1 = (int32_t)(xC4S4 * (ip[0*8] - ip[4*8]));
|
|
t1 >>= 16;
|
|
F_ = t1;
|
|
|
|
t1 = (int32_t)(xC2S6 * ip[2*8]);
|
|
t2 = (int32_t)(xC6S2 * ip[6*8]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
G_ = t1 + t2;
|
|
|
|
t1 = (int32_t)(xC6S2 * ip[2*8]);
|
|
t2 = (int32_t)(xC2S6 * ip[6*8]);
|
|
t1 >>= 16;
|
|
t2 >>= 16;
|
|
H_ = t1 - t2;
|
|
|
|
|
|
_Ed = E_ - G_;
|
|
_Gd = E_ + G_;
|
|
|
|
_Add = F_ + _Ad;
|
|
_Bdd = _Bd - H_;
|
|
|
|
_Fd = F_ - _Ad;
|
|
_Hd = _Bd + H_;
|
|
|
|
if(type==1){ //HACK
|
|
_Gd += 16*128;
|
|
_Add+= 16*128;
|
|
_Ed += 16*128;
|
|
_Fd += 16*128;
|
|
}
|
|
_Gd += IdctAdjustBeforeShift;
|
|
_Add += IdctAdjustBeforeShift;
|
|
_Ed += IdctAdjustBeforeShift;
|
|
_Fd += IdctAdjustBeforeShift;
|
|
|
|
/* Final sequence of operations over-write original inputs. */
|
|
if(type==0){
|
|
ip[0*8] = (_Gd + _Cd ) >> 4;
|
|
ip[7*8] = (_Gd - _Cd ) >> 4;
|
|
|
|
ip[1*8] = (_Add + _Hd ) >> 4;
|
|
ip[2*8] = (_Add - _Hd ) >> 4;
|
|
|
|
ip[3*8] = (_Ed + _Dd ) >> 4;
|
|
ip[4*8] = (_Ed - _Dd ) >> 4;
|
|
|
|
ip[5*8] = (_Fd + _Bdd ) >> 4;
|
|
ip[6*8] = (_Fd - _Bdd ) >> 4;
|
|
}else if(type==1){
|
|
dst[0*stride] = cm[(_Gd + _Cd ) >> 4];
|
|
dst[7*stride] = cm[(_Gd - _Cd ) >> 4];
|
|
|
|
dst[1*stride] = cm[(_Add + _Hd ) >> 4];
|
|
dst[2*stride] = cm[(_Add - _Hd ) >> 4];
|
|
|
|
dst[3*stride] = cm[(_Ed + _Dd ) >> 4];
|
|
dst[4*stride] = cm[(_Ed - _Dd ) >> 4];
|
|
|
|
dst[5*stride] = cm[(_Fd + _Bdd ) >> 4];
|
|
dst[6*stride] = cm[(_Fd - _Bdd ) >> 4];
|
|
}else{
|
|
dst[0*stride] = cm[dst[0*stride] + ((_Gd + _Cd ) >> 4)];
|
|
dst[7*stride] = cm[dst[7*stride] + ((_Gd - _Cd ) >> 4)];
|
|
|
|
dst[1*stride] = cm[dst[1*stride] + ((_Add + _Hd ) >> 4)];
|
|
dst[2*stride] = cm[dst[2*stride] + ((_Add - _Hd ) >> 4)];
|
|
|
|
dst[3*stride] = cm[dst[3*stride] + ((_Ed + _Dd ) >> 4)];
|
|
dst[4*stride] = cm[dst[4*stride] + ((_Ed - _Dd ) >> 4)];
|
|
|
|
dst[5*stride] = cm[dst[5*stride] + ((_Fd + _Bdd ) >> 4)];
|
|
dst[6*stride] = cm[dst[6*stride] + ((_Fd - _Bdd ) >> 4)];
|
|
}
|
|
|
|
} else {
|
|
if(type==0){
|
|
ip[0*8] =
|
|
ip[1*8] =
|
|
ip[2*8] =
|
|
ip[3*8] =
|
|
ip[4*8] =
|
|
ip[5*8] =
|
|
ip[6*8] =
|
|
ip[7*8] = ((xC4S4 * ip[0*8] + (IdctAdjustBeforeShift<<16))>>20);
|
|
}else if(type==1){
|
|
dst[0*stride]=
|
|
dst[1*stride]=
|
|
dst[2*stride]=
|
|
dst[3*stride]=
|
|
dst[4*stride]=
|
|
dst[5*stride]=
|
|
dst[6*stride]=
|
|
dst[7*stride]= 128 + ((xC4S4 * ip[0*8] + (IdctAdjustBeforeShift<<16))>>20);
|
|
}else{
|
|
if(ip[0*8]){
|
|
int v= ((xC4S4 * ip[0*8] + (IdctAdjustBeforeShift<<16))>>20);
|
|
dst[0*stride] = cm[dst[0*stride] + v];
|
|
dst[1*stride] = cm[dst[1*stride] + v];
|
|
dst[2*stride] = cm[dst[2*stride] + v];
|
|
dst[3*stride] = cm[dst[3*stride] + v];
|
|
dst[4*stride] = cm[dst[4*stride] + v];
|
|
dst[5*stride] = cm[dst[5*stride] + v];
|
|
dst[6*stride] = cm[dst[6*stride] + v];
|
|
dst[7*stride] = cm[dst[7*stride] + v];
|
|
}
|
|
}
|
|
}
|
|
|
|
ip++; /* next column */
|
|
dst++;
|
|
}
|
|
}
|
|
|
|
void ff_vp3_idct_c(DCTELEM *block/* align 16*/){
|
|
idct(NULL, 0, block, 0);
|
|
}
|
|
|
|
void ff_vp3_idct_put_c(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/){
|
|
idct(dest, line_size, block, 1);
|
|
}
|
|
|
|
void ff_vp3_idct_add_c(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/){
|
|
idct(dest, line_size, block, 2);
|
|
}
|